<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>flex 双飞翼(圣杯)布局</title>
    <style>
        .box {
            background-color: lightgreen;
            display: flex;
        }
        .left{
            background-color: lightskyblue;
            width: 230px;
            height: 100vh;
            flex-shrink: 0;
        }
        .center{
            background-color: lightpink;
            height: 100vh;
            flex-grow: 1;
        }
        .right{
            background-color: lightyellow;
            height: 100vh;
            width: 230px;
            flex-shrink: 0;
        }
    </style>
</head>
<body>
<div class="box">
    <div class="left">不放大不缩小</div>
    <div class="center">会放大会缩小</div>
    <div class="right">不放大不缩小</div>
</div>
</body>
</html>